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Revision as of 18:45, 9 July 2014

Tarball: criu-3.15.tar.bz2
Version: 3.15 "Titanium Falcon"
Released: 03 Nov 2020
GIT tag: v3.15

Welcome to CRIU, a project to implement checkpoint/restore functionality for Linux in userspace.

Checkpoint/Restore In Userspace, or CRIU (pronounced kree-oo, IPA: /krɪʊ/, Russian: криу), is a software tool for Linux operating system. Using this tool, you can freeze a running application (or part of it) and checkpoint it to a hard drive as a collection of files. You can then use the files to restore and run the application from the point it was frozen at. The distinctive feature of the CRIU project is that it is mainly implemented in user space.


Getting packages for your distribution
Or try manual installation to have CRIU on your system

Three ways to start using the C/R functionality
Usage scenarios
Ideas how criu can be used (some are crazy indeed)
What software is supported
Describes TODO list in higher level terms
Collection of real world examples of how to use CRIU. Some are complex, some are not. HOW TO dump a simple loop might be the best one to start with.
What can change after C/R
CRIU cannot (yet) save and restore every single bit of tasks' state. This page describes what bits visible through standard kernel API are such.
What cannot be checkpointed
What an application could do to make CRIU refuse to dump it.


If you're interested in CRIU development, please subscribe to the criu mailing list: http://lists.openvz.org/mailman/listinfo/criu

Description of image files format
CRIU can call plugins provided by people
Upstream kernel commits
Mainline kernel commits tracker
Recent commits
CRIU tool repository commits
Kernel's manpages commits tracker
ZDTM Test Suite
Zero downtime test suite
Current TODO list
What to keep in mind when writing new code
Code coverage results
Shows how zdtm run covers the criu code paths
How to submit patches

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X.Org Developer Conference 2021

September 15, online on the wider Internet

Fast Checkpoint Restore for AMD GPUs with CRIU

Under the hood

External links

More external articles...